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 <head>

  <title>CSS Test: background-position - ex unit</title>

  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
  <link rel="help" href="http://www.w3.org/TR/CSS21/colors.html#background-properties" />
  <link rel="help" href="http://www.w3.org/TR/CSS21/syndata.html#length-units" />
  <link rel="help" href="http://www.w3.org/TR/CSS21/fonts.html#font-size-props" />
  <meta content="ahem image" name="flags" />
  <meta content="ex unit is the 'x-height' of the relevant font. 'em' and 'ex' length values when defining 'font-size' property refer to the computed font size of the parent element." name="assert" />

  <style type="text/css">* { margin: 0; padding: 0 }<![CDATA[
  html {font: 20px/1 Ahem;}

  body
  {
  background: url("support/1x1-lime.png") repeat-y 12.5ex 0;
  font-size: 2.5ex;
  margin: 0;
  }

  #expected-results {font-family: serif;}
  ]]></style>

 </head>

 <body>

  <p><img src="support/ruler-h-200px-400px.png" width="700" height="18" alt="FAIL" /></p>

  <p id="expected-results">A thin green vertical line should appear at exactly 400px</p>

 </body>
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